Well-drilling rig



J y 2, 1929- E. B. GURG-ANIOUS 1.719.765

WELL DRILLING RIG Filed Feb. 20, 1926 3 Sheets-Sheet 1 July 1 9- E. B. GURGANIOUS WELL DRILLING RIG 3 Sheets-Sheet 2 Filed Feb. 20, 1926 July 2, 1929. E. B. GURGANIOUS WELL DRILLING RIG Filed Feb. 20, 1926 5 Sheets-Sheet 3 Patented July 2, 1929.

UNITED STATES ERNEST B. G'URGANIOUS, OF ROCHESTER, MINNESOTA.

WELL-DRILLING RIG.

Application filed February 20, 1926. Serial No. 89,786.

This invention relates to an improvement 1 in well drilling rigs.

The purpose of the invention is to provide a chain drive for the bull-Wheel of well drilling rigs, thus eliminating the usual ropedrive for this bull-wheel. These wheels are usually driven by a long rope which is stretched from the band-Wheel at the front of the drilling rig and, in order to drive the bull-wheel in a direction opposite to that of the band-wheel, it is necessary to cross the rope in the center. A certain .unount of slack must also be left in the rope and these various things cause considerable annoyance and difficulty in using a rope, and, even loss of life at times.

In my improved construction, these drive ropes are eliminated and suitable sprocket chains are provided for driving the bullwheol from the band-wheel. By providing reverse gearing at a pointin this chain drive, the bull-wheel may thereby be driven in a direction opposite to that of the band-wheel. Suitable clutches are also provided for con necting the chain to the respective driving and driven wheels.

Various other improvements-are also provided for the drilling rig, such as a novel manner of clamping the disks constituting the drum on the bull-wheel shaft and a novel form of brake, especially constructed and adapted for the bull-wheel, and also, a very practical and useful form of chain guide or tightener is provided for supporting the drive chain at points intermediate its ends. These and various other improvements will be more fully set forth hereafter.

In the accompanying drawings Fig. 1 is a side elevation of my improved well drilling rig;

Fig. 2 is a top plan. view ofthe same;

Fig. 3 is a transverse sectional view on the line 33 of Fig. 2;

Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 2; i

Fig. 5 is a side elevation partly in section of one of the disks for the rope spool Fig. 6 is an edge view of the same;

Fig. 7 is a top plan view ofthe same disk; Fig. 8 is a plan view of the reverse gears a Fig. 9 is a side elevation partly 1n section of the same; i i

Fig. 10 is a detail view partly in section of the brakeapplying segment;

Fig. 11 is a side elevation of the chain support; and

l ig. 12 is a top plan view of the same.

Referring more particularly to Figs. 1 and 2, the numeral 1 indicates the front stand ards of the derrick, which are mounted upon the main sills 2, which, in turn, are supported by the transverse mud-sills 3, and sub-sills may be placed beneath the mudsills 3 which support the derrick. As shown in Fig. 1, the bull-wheel which carries the rope or cable is ordinarily mounted in the standards 1 of the derrick in a position to allow the rope to be wound therefrom and up over the crown block at the top of the derrick and then down into the well, being connected with the rocking beam at a suit able point in the derrick, in order to impart a reciprocating or impactmotion to the rope and to the tools carried thereby. The bullwheel is adapted to be driven from a bandwheel shown at the left in Fig. 1 and, in the ordinary practice, a crossed rope imparts the motion from the band-wheel to the bull-wheel, but, in my improved construction, chains are provided for this purpose, thus eliminating the undesirable and dangerous rope drive. The band-wheel may be driven from a suitable engine placed at a distance therefrom and usually at a point outside of the drill house. i

As shown more particularly in Fig. 3, anon-rotatable shaft 5 is mounted in suitable hearings in the standards 1 of the derrick. Mounted upon this shaft 5 are suitable bushings 6, which support the outer ends of the sleeve 7 and are keyed to this sleeve in order to turn therewith upon the shaft 5. Oil cups 8 are provided in the sleeve 7, which register with oil ducts in the bushings 6, in order to supply a lubricant to the bearing surface of these bushings upon the shaft 5 Interposed between one end of the sleeve 7 and the adjacent standard 1 is a suitable bearing-block 10, over which passes a long U-bolt 9, the lower endof which extends beneath the bacleframer sills 3'. and nuts 12 are-secured onto the ends of thisU-bolt for the purpose of holding the endof the shaft 5 down in its proper position and in order not to' cause any unnecessary bearing of this shaft in an upward direction, because ofits vibration.

The opposite end of the shaft 5is also provided with a bearing-block 13 for receiv- Cir in the lon U-bolt 14. which is similarlv C) C i connected beneath the back-trainer sill 3 by the nuts 15.

Assshown in Fig. 3, a brake drum 1G is keyed to the sleeve 7 and is provided with a peripheral groove 17 Which receives the brake-band 18. As shown in Fig. .10, the

' opposite ends of the brake-band 18 are conwasher andscrew 27. A metal disk 23 is bolted to :the inside of the brake-drum 16 by means of the bolts :29, as shown in Fi 3. This disk is adapted to hold the rope and rope-drum away from the brake-drum.

The opposite enda-of the sleeve 7 has a Wheel keyed thereon which is also providedwitlr a d-isk.31, boltedtothe spokes thcreoflin-a manner similar to the disk 28 and for the same .purpose. .A bushing- 32 is secured to the'shaft .5'by'mea-ns ofthe setscrews 33for the'purpose of limiting the endwise movement of the sleeve 7 and-wheels carried thereby relative tov thisshaft. The Wheel 30 has a clutch-drum 34 secured thereto by means-of thebolts 35 passing through thespokes, as shown in Fig. 3, and

- clutch-arms 36 are mounted in position to engage the periphery of theclntch-driun 34.. These clutch-armsmay be carried and operated by any'suitable construction from the clutch-bushing 37. The usual form of clutchefork 3S isalsoprovided for throwing the clutch into and out of engagement with the ClUtCll-(llllliiil; and for clamping the clutch-armsupon the periphery of. this drum. The'cilulich-bushing 37 is rotatably mounted on the shaft 5 for rotating relative to this shaft and, in order to be driven, the. clutch-bushing has a sprocket-wheel 35) mounted thereon. Adrivechainl-l passes over the sprocket-Wheel 39 for driving this wheel and the clutch mechanism connected therewith and, whenever the clutch-arms 36 are clampedupon the clutch-drum 3 1, this will cause the rotation of the pulley 30 and the sleeve 7 and, through this sleeve, the brake-drum 16.

Mounted upon the sleeve 7 are suitable rope-drum disks @2 Which are made in sections, to be clampedup'on'the sleeve 7, and these disks are provided with double headed bolts 43, which are set in'through the edges of each disk through slots 4.4, the :heads of the-bolts being receivedin notches 4:5 as shown in Figs 5 to 7." The disks 42 cooperate with the sleeve 710 form a rope d rum for receiving the rope.

The usual groove 16 is provided through the periphery of each of the disks as shown in Fig. 7 for allowing the rope to be wound off of and onto the drum.

For the purpose of strengthening the. sleeve 7 through the center thereof at afpoint where the rope drum, formed by the disks 4 2, is positioned, a sleeve a7 is riveted therclo by means of the rivets 4-8 and this sleeve 47 has inwardly extending projections -10 formed thereon,which extend toward but do not engage the shaft 5.

The SPIOClIOt-Cllfllll 11 passes over a sprocketavheel 50 shown in detail in Fig. 8, which sproclwt-wheel 50 is lixed upon a shaft 51, extending through bearings 52. The shaft 51 has a gear 53 .lixed thereon which meshes with a pinion 54: carried by shatt'55, likewise extending through bearings 56 in the case 57 and has a sprocket wheel 58 fixed thereon exteriorly of this casing 57. t will be noted that the sprocketwheels 50 and are mounted exteriorly ol" the casing 57 whereas the gear and pinion 53 and 54: are mounted within the casing and are adapted to be rotated in a iihn of oil for lubricating the same. Any suitable cover 59 may be provided for covering the gearing in the casing. The casing 57 has bolts 60 extending therethrongh and through slots 61 in the supporting plate 62, mounted upon and securely bolted to the mud-sills 3. A. chain 6?) passes around and drives the. sprocket-wheel 58, said chain extending to a double sprocket-whee] 6i mounted in a suitable supporting boxing G5. Placed intermediate of the sprocket-wheels (ii: and 5a is a suitable chain support or tightener for supporting the weight of the chain thri'ingh this area. This chain support may be made in any suitable constriu'lirm. but as shown in Figs. 11 and 12 it is 'lornied oi a pinrality of channel-irons (36 securely bolted upon transverse sills secured between the. mud-sills 3. .The channel-irons (iii are placed back to back as shown in Fig. [2 with a space therebetween for receiving the pillow-blocks 67. These pillow-blocks are securely held in the channel-irons ()0 by means of bolts 68, passing through an elongated slot (39 formed in each flange of the channel-irons 66. This form of supporting the pillow blocks 67 permits of adjustment of the same relative to the channel-hams for applying tension to the chain. The pillowblocks 67 carry stub-shafts 70 upon which are mounted idler sprocket-wheels 71, for engaging the sprocket-chain and supporting the same. As shown in Fig. 11, these sprocket-wheels are placed in staggered relation so that one will engage the upper surface of the sprocket-chain while the other engages the lower surface therefor,

thus not onry supporting the chains but also permitting of the application of tension thereto for taking up any slack that may exist in the chain.

Extending upwardly from the double sprocket-wheel 64 is a sprocket-chain 72 which passes over a sprocl'cet-wheel 78 loosely mounted upon the band-wheel shaft 74 as shown in Fig. 4E. The hub of the sprocket-wheel 73 is provided on one side with the clutch-element 75 and on the opposite side with a clutch-fork 76, for operating the sprocketovheel to move the ClllilCl1GlG1l1GIlb 7 5 into engagement with a c'lutch-elenlei'it 75, extending outwardly from the faceplates 77, of the band-wheel 78. The plates 77 are bolted together through the bandwheel by bolts 79 and each of these plates is keyed to the shaft 7 4 by keys 80. For the purpose of witl'idrawing the keys 8(), the clutch-element 7 5' is hollowed out as at S1, in order to permit the insertion of a key withdrawing hook between the clutch-element 75 and the shaft 74:.

v The operation and function oi this rig will be apparent from the foregoing description but to recapitulate, the band-wheel 78 is driven from any suitable engine or source of power, usually by a belt passing over this wheel, and this band-wheel drives the sprocket-wheel 73 whenever the clutch elements 75 and 75 are intermeshed, thus driving the sprocket-chain 7 2 and the double sprocket wheel 64, which, in turn, drives the sprocket-chain 63 and the sprocket-wheel 58. The sprocket-wheel 50 is driven from the sprocket-wheel 58 by means of the reversing gears and. 54; and this sprocket-wheel 5O drives the s n'ocket-chain 41, which passes around. the sprocket-wheel 39, driving this wheel and the clutch-arms 36, which, when clamped upon the clutch-drum 34, drives this drum and the wheel 30,thus imparting rotary motion to the sleeve 7, which carries the rope-drum and the brake-drum 16.

it wi ll be noted that the reversing gearing will drive the wheel 30 and rope drum in a direction opposite to that oil the band-wheel 78. This is preferable for the purpose of winding the cable out of the well. Whenever either ol the clutches mounted on the shaft 74. or the shaft 5 is drawn out of engagement, the rope-drum may be brought to a stop by moving the brake lever 26 which tightens the brake-band 18 upon the brakedruin 16.

I claim:

1. In a well drilling rig, the combination of a band wheel, a bull wheel, a drive chain connected with and, extending downward from said band-wheel, a drive chain connected with and extending downward from the bull wheel, and a connecting, chain oper-- atively connected with said downwardly extending drive chain.

2. In a well drilling rig, the combination oi? a bull-wheel, a drive chain connected with said bull wheel and extending downwardly substantially vertically therefrom, reverse gearing connected with said drive chain, a double chain wheel arranged in substantially the same horizontal plane as the reverse gearing, a chain connecting the double chain wheel with the reversing gearing, a driving, band wheel, and a driving chain extending upwardly from the double chain wheel and connected with the band wheel.

In a device of the character (lQSCYlbHl, the combination of a shaft, a sleeve mounted thereon, bushings interposed between the shaft and the sleeve adjacent the ends there- 01, a bushing secured to the sleeve substantially at the center thereof, drum disks mounted upon said sleeve at the point oi said central bushing, bearing blocks mounted upon the shaft for limiting the movement of the sleeve relative thereto, a brake-drum mounted upon one end of the sleeve, a wheel mounted upon the opposite end of the sleeve, face plates secured to the inside of the brakedrum and wheel, a clutch-drum secured to said wheel, clutch means for engaging said clutch-drum, and means for driving said clutch means.

In testimony whereof I allix my signature.

ERNEST B. GU RGANIOUS. 

